Resin Calculator — SLA 3D Print Resin Volume
Resin Volume
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Resin Weight
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Resin Cost
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Calculating Resin Volume for SLA Printing
Resin 3D printing (SLA, DLP, and MSLA) uses liquid photopolymer resin that is cured layer by layer using UV light. Unlike filament printers where material cost is based on weight, resin printing costs are driven by the volume of liquid resin consumed. This calculator estimates the amount of resin needed for a print based on the model volume, hollowing thickness, and drain hole considerations.
The calculation starts with the total volume of the model in cubic centimeters or milliliters (1 cm3 = 1 mL of resin). If the model is hollowed, only the shell volume is used, which is the outer volume minus the interior cavity. Hollowing is standard practice for resin prints larger than a few centimeters because it reduces material use, lowers print time, and minimizes the suction forces that can cause print failures. A typical shell thickness of 2-3mm provides adequate strength for most decorative and functional parts.
Resin costs significantly more per unit volume than FDM filament, making accurate volume estimation important for budgeting. Standard resins cost roughly $30-50 per liter, while specialty resins like tough, flexible, or castable formulations can exceed $100 per liter. By estimating resin usage before printing, you can decide whether to hollow a model further, adjust the scale, or choose a less expensive resin for prototyping before committing to a final material for production prints.
Frequently Asked Questions
How much resin does SLA printing use?
SLA prints use roughly the volume of the model plus 10-20% for supports. Hollowing models with drain holes can reduce resin usage by 50-80% compared to solid prints.
Should I hollow my resin prints?
For models larger than about 2cm in any dimension, hollowing saves significant resin and reduces curing issues. Use 1.5-2mm wall thickness and always add drain holes for uncured resin.
How long does a bottle of resin last?
A 500mL bottle of resin can produce many small prints or a few large ones. Typical small miniatures use 5-15mL each. Track your usage to estimate costs accurately.